Enhancing Battery Safety with Fractional Thermal Runaway Calorimetry

Walker, William ; Darst, John ; Hughes, Peter J ; Johnson, Kenneth L ; Dimpault-Darcy, Eric C ; Rickman, Steven L

关键词: EJECTA;    ELECTRIC BATTERIES;    SAFETY;    HEAT MEASUREMENT;    CALORIMETERS;    TEMPERATURE CONTROL;   

RP-ID  :  JSC-E-DAA-TN66465

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Effective thermal management systems, designed to handle the impacts of thermal runaway (TR) and to prevent cell-to-cell propagation, are key to safe operation of lithium-ion (Li-ion) battery assemblies. Critical factors for optimising these systems include the total energy released during a single cell TR event and the fraction of the total energy that is released through the cell casing versus through the ejecta material. A unique fractional thermal runaway calorimeter (FTRC), designed to characterise said critical factors, was utilised to examine the TR behaviour of Li-ion cells). Delegates will be provided with an in-depth discussion on what fractional thermal runaway calorimetry is and how it benefits the development of safe and optimised battery assemblies that protect against thermal runaway. Delegates will see calorimetry data associated with a variety of Li-ion cells. Data presented is relevant to any industry that utilises high-energy Li-ion cells in closed environments and has a need to focus on safety.